Yamaha WR 125 Ignition

The rectifier/regulator changes the AC voltage generated in the alternator to the DC voltage of 12V used in the vehicle electrical system and keeps the voltage within a certain tolerance range. This charges the battery and ensures that...

This wiring harness is needed to connect the Polini ECU device to Yamaha injectors.

Original NGK spark plug connector in black. The plug is made of plastic and has a protective lip for the spark plug to prevent moisture from penetrating.

Besides the standard candles we can offer you special racing candles. They have a super fine iridium center electrode. Highly recommended for heavily tuned engines and when using internal rotor ignitions. The ignition spark is much more...

Important for engine tuning is the correct heat value of the spark plug, otherwise the cylinder will overheat or the spark plug will be constantly sooted. A cold spark plug gives off more heat to the cylinder head, the electrode tends to...